1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
2. Exploration and Development Research Institute, Henan Oilfield Company, SINOPEC, Zhengzhou, Henan 637001, China
3. Exploration and Development Research Institute, Qinghai Oilfield Company, CNPC, Dunhuang, Gansu 736202, China